and, scott, that leaves the gun control bill in shambles. democratic senator richard blumenthal of connecticut said today this is the saddest day of his years in public life. >> pelley: chip, thank you very much. a short time ago, mr. obama brought some of the newtown families and gabrielle giffords into the rose garden at the white house. major garrett was there. major? >> reporter: scott, somber and frustrated, president obama said the gun control debate will not end because the senate could not muster 60 votes for expanded background checks. he stood, as you said, with some of the sandy hook families. mark barden, who lost his son daniel in that mass shooting, spoke first and said washington has not heard the last of this issue. >> we'll return home now disappointed but not defeated. we return home with a determination that change will happen. maybe not today, but it will happen. it will happen soon. we've always known this would be a long road, and we don't have the luxury of turning back. we will keep moving forward and build public sup